Where I used to live in WI, they ripped up the old railroad, and turned it into a bike & jogging path, it was a snowmobile trail in the winter time. That trail was like a interstate, almost straight as an arrow forever.
I could get from town to town faster on that trail, then you could in a car/truck taking the roads.
In northern WI & MI there's a old railroad line that follows US Hwy 2, that's a snowmobile trail in the winter.
You can get from town to town, on that trail quick. Cruising along at 100 mph.